/*
 * Copyright (C) 2009 CityLights Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.schizoidman.android.citylights;

import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;

public class Preferences extends PreferenceActivity {

	private static final String PREF_POLLING_PERIOD = "polling_period";
	
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        // Load the preferences from an XML resource
        addPreferencesFromResource(R.xml.preferences);

        ListPreference ppp = (ListPreference)getPreferenceManager().findPreference(PREF_POLLING_PERIOD);
        ppp.setSummary(ppp.getEntry());
        
        PreferenceManager.getDefaultSharedPreferences(this).
        	registerOnSharedPreferenceChangeListener(mPollingPeriodChangeListener);
    }

	/* (non-Javadoc)
	 * @see android.preference.PreferenceActivity#onDestroy()
	 */
	@Override
	protected void onDestroy() {
		super.onDestroy();
		PreferenceManager.getDefaultSharedPreferences(this).
			unregisterOnSharedPreferenceChangeListener(mPollingPeriodChangeListener);
	}

	// Polling period preference change listener
	private OnSharedPreferenceChangeListener mPollingPeriodChangeListener = new  OnSharedPreferenceChangeListener() {
		public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
			if (PREF_POLLING_PERIOD.equals(key)) {
				// Update preference summary
				ListPreference ppp = (ListPreference)getPreferenceManager().findPreference(PREF_POLLING_PERIOD);
		        ppp.setSummary(ppp.getEntry());
				// Re-engage AlarmService with the new polling period settings
				MonitorWidgetBroadcastReceiver.engageAlarmService(Preferences.this);
			}
		}
	};
    
}
